[The Newell]

The sanitizing bleach load is 3/4ths cup of 5-6% sodium hypochlorite in 40 gallons of water. If you completely drain the sanitizing load and completely refill the tank and plumbing with fresh water, that taste should be minimal . No after-treatment with chemistry in action needed.

The trick is in draining the plumbing. After sanitizing I open the drains on the supply tank and on the accumulator and hot water tanks and drain them all. I turn on all faucets to allow them to bank drain.

On the refill, I fill the supply tank, and then turn on the pump and open the hot water faucets to and allow the hot water tanks to fill and then the cold faucets to purge that plumbing. I then back fill the supply tank.

By then the only chlorine you are going to taste is the chlorine put in by the water department.